
Integrated Silicon Solution
GENERAL DESCRIPTION
IS31FL3235 is comprised of 28 constant current channels each with independent PWM control, designed for driving LEDs. The output current of each channel can be set at up to 38mA (Max.) by an external resistor and independently scaled by a factor of 1, 1/2, 1/3 and 1/4. The average LED current of each channel can be changed in 256 steps by changing the PWM duty cycle through an I2C interface.
FEATURES
● 2.7V to 5.5V supply
● I2C interface, automatic address increment
function
● Internal reset register
● Modulate LED brightness with 256 steps PWM
● Each channel can be controlled independently
● Each channel can be scaled independently by 1,
1/2, 1/3 and 1/4
● ESD HBM 8kV
● -40°C to +85°C temperature range
● QFN-36 (4mm × 4mm) package
APPLICATIONS
● Mobile phones and other hand-held devices for
LED display
● LED in home appliances